Gaseous fuel



UNITED STATES PATENT OFFICE.

JAMES R. ROSE, OI EDGEWORTH, PENNSYLVANIA, AND JOHN HARRIS, 01 LAKEWOOD, OHIO, ASSIGNOBS TO OABBO-OXYGEN COMPANY, OF PITTSBURGH, PENNSYLVANIA,

A CORPORATION OF DELAWARE.

GASEOUS FUEL.

No Drawing.

To all whom it may concern:

Be it known that we, (1) JAMES R. Rosa, (2) JOHN HARRIS, citizens of the United States, residing at (1) Edgeworth (2) Lake wood, in the county of (1) Allegheny, (2) Cuyahoga, and State of (1) Pennsylvania, (2) Ohio, have invented a certain new and useful Improvement in Gaseous Fuel, of which the following is a full, clear, and exact description.

This invention relates 'to gaseous fuels, and particularly to fuels for the cutting and welding of metals wherein a combustible base of hydrogen is employed to ether with another gas or gases capable o producing within the blow pipe flamea visible or luminous cone whereby the proportions of the combustible gases and oxygen may be conveniently adjusted and the application of the flame to the work is facilitated.

It has been proposed to mix with hydrogen, gases such as illuminating gas and carbon monoxide, the mixture being particularly well suited for certain kinds of work. It is the purpose of this invention. to produce a gas, employing hydr gen as such combustible base, which shall be particularly useful for the cutting of alloys, cast steel, corroded, dirty and slaggy iron and steel, as well as cast iron; also for cutting large bodies or masses of metal, as well as for heating such large masses or bodies of metal for the purpose of softening the same. For this purpose we employ a mixture of butane with hydrogen 1n proportions of from 5% to 25% by volume each of the butane to the hydrogen constituent. By .the use of this as, a high carbon content in the mixture is o tained, thereby producing a blow pipe flame to the volume and heat units of Specification of Letters Patent.

Patented Jan. 24, 1922.

Application filed December 26, 1919. Serial No. 347,461.

which will be increased over the volume and heat unitsproduced by the combustion of hydro en alone with oxygen, to the extent to whlchthe butane is present in the mixture. The presence of the butane in the mixture enables the metal to be pre-heated quickly and, in the case of large masses or bodies of such metal, with sufficient rapidity to more than offset the loss of heat through conduction and radiation. This renders the fuel particularly useful for the cutting and heating of such heavy masses of metal, as well as for cutting the special metals of the character set forth hereinbefore.

According to Richard on Metallur 'cal Calculations, published in 1908, the ame temperature produced by the combustion of the aforesaid gases will exceed 3200 (3., and and the variations in the percentages of the said gases will cause the following variations in the net B. T. U. per cubic foot-of mixture and in the cubic feet of oxygen required for the combustion of a cubic foot of such mixture:

No. 1 mixture, 95% H. with 5% of butane; net B. T. U.s 441; cu. ft. of oxygen .800.

No. 2 mixture, 75% H. with 25% of butane; net B. T. U.s 1022; cu. ft. of oxygen 2.000.

Having thus described our invention, what we claim is g A gas for the purpose specified consisting of a mixture of hydrogen with from 5% to 25% by volume of butane.

In testimony whereof, we hereunto afiix our signatures.

JAMES R. ROSE. JOHN HARRIS. 

